First of all, the DVCS cross sections measured in Hall A with a 6 GeV beam [1]}, [2]} were fitted in order to extract some realistic values of the CFFs. These values were then used to calculate projected cross sections at the kinematics of Tab. REF . The CFFs are assumed constant in \(t\)  for this exercise and
equal to the average value of those extracted from 6 GeV data. The projected electron and positron cross sections are then fitted. In doing this, the statistical and systematic uncertainties of the measurements were added quadratically. Fig. REF  shows the results for kinematics with \(x_B=0.36\) . Each line shows the five
kinematic settings in \(Q^2\) , \(E_b\)  at constant \(x_B\)  and \(t\) , which are fitted simultaneously neglecting the logarithmic \(Q^2\) -dependence of CFFs in the range of \(\sim \) 3–6 GeV\(^2\) . Each column in Fig. REF  shows each of the 5 bins in \(t\)  where the data were binned. The blue lines correspond to the fits of both the (approved) electron data (helicity-dependent and helicity-independent) and the positron (proposed) data (only helicity-independent).
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